made updates to load envs and streamline pg pool to cut down on connections (#15)

Reviewed-on: #15
Co-authored-by: Joseph Nelson <joseph.nelson4456@gmail.com>
Co-committed-by: Joseph Nelson <joseph.nelson4456@gmail.com>

src/routes/users/index.js

@@ -1,12 +1,8 @@
 import express from 'express'
-import { database } from '../../config/index.js'
-import { Pool } from 'pg'
+import { pool } from '../../config/index.js'
 
 const router = express.Router()
 
-// Create a connection pool to the database
-const pool = new Pool(database)
-
 /**
  * Get all users.
  */